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Letters Patent No. 71,497, dat/d November 26, 1867.

A IMPROVBD MACHINE FOR ROUNDING UP SOLES.

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. TO ALL WHOM IT 'MAY CONCERN:

Be it known that I, WILLIAM H. N. KIMBALL, of Lynn, in the county of Essex, and State of Massachusetts. have invented an Improvement in Machines for Rounding Up Soles; and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specification, is 'a description of my invention sufficient to enable those skilled in the art to practise it.

The object of this invention is to round up or trim or cut the contour or periphery of-boot or shoe-soles, i

or other irregular objects, by making use of a pattern which is secured to the object to be cut, and a gauge of peculiar form and arrangement, said pattern bearing against the salient part of the gauge, which is formed with an under-cut, so as to admit the passage of a chip beneath the gauge,'as thc feeding-wheels act to 'more the work against the knife-edge. A

This gauge may be applied to almost any mechanism in which, for thc purpose of feeding, there is a pair of rolls capable of approaching each other, one being serrated, and acting as the carrier, while the other may be' smooth-faced, and acting mainly as a presser, though if the upper roll be geared so as to revolve, with the same l surface velocity as 'the lower roll, both rolls will act as carriers; the upper roll having the additional function of a presscr.

The machine shown in the drawing is not of my invention, it being the main part of an organization known as a channelling-machinc, use'd for the purpose of channelling soles, but as it is in use in most boot and shocfactories, and is .Well adapted for the addition thereunto of my peculiar gauge, I have shown it in the drawing with the channelling-knives removed, and with Athe addition of my improved gauge, `in connection with a knife arranged to eut the edges of soles. I i

a a a represents the frame of the machine; b, a pinion on a. crankshaft meshing into a gear, con the lower feed-roll shaft d. The gear e on the said shaft meshes into a gealgf, on the shaft y, carrying the upper feed-roll, said shaft being mounted in bearings on Va pivoted lever, 7L, so arranged thatlby pulling on the rod t' the upper rollj can be made to approach the lower roll le, while by releasing `the pull, the spring l causes the rollj to -move away from thc roll r. On a part of the frame adjacent to the feed-roll k is fixed my improved gauge, which is made of two pants, or with two surfaces, n and o, the former surface being uppermost, and prof jecting beyond the lower surface-o, as seen in the drawing. The knife p is fixed to the frame, with its edge parallel 'to and inv contact -wit'hftlie surface ri., and presented also in opposition to the direction in which thematerialto. be cut is fed or="movcd, by the. action of the rolls. The height of the surface o must'bc equal to or greater than the thickness 4of ithe 'material to be cut, and it must be set back from the surface n a distance equal to or greater than the other dimensionofthe chip to be removed by the knife. The thickness of the surface u should be. equal to the thickness of theipattrn or solei'which is to be made to come into contact with said surface.

n By, having the. guiding-surface uppermost, and with a space beneath for `the passage of the chip, the operator can always keep the` pattern in contact` with the surface n, which gauges and regulates the cut. For the rounding up ofuwhole soles, I make use ofa pattern of the exact shape and size to which it is desired to cut the leather, and secure Ysuch pattern, which preferably is to be made of metal, to the leather temporarily by pins or tacks,thev1enther being firstcut roughlyjvt'o an approximation ofthe finished sole.

In fitting tapfsoles, thesclcswith which the tap iste be used is made-usc of as pattern to bear against the surface it-,of'the vg`augc,\t`he material for Athc tap-sole being previously roughly cut to an approximation of the size ofthe finished tap, and bcingtcmpdrarily secured to Ithe sole which is used as a pattern.

v ,The material to be clit, and the-pattern `being introduced between thc rolls]l and c, and subjected to pressure fromroll sj, rotation is given tothe rolls in direction to carry the material te be cut againstjhe knife-edge, the operator`-guiding and controllingthe direction of movement of the sole7 and keeping4 the pattern constantly in contact Awith the gauge-surface a.-

Ielaim for' use with a pattern and a knife and a feeding-mechanism, such anarrangement of a gauge for the pattern to bear against, that the chip cut will pass beneath thc gauge, Vso as not to obstruct the view of the operator, thus enablinghim to' keepl the pattern always in contact with thegaugc, substantiallyas described.

' W, H. N; KMBALL.

Witnesses:

JHB. CROSBY F. GoULD. 

